Product Description

Dynalloy® OBC8100-N75 is a TPE developed utilizing the unique rubber properties of Dow INFUSE? Olefin Block Copolymers. The 8100 Series has been specifically developed for applications requiring the TPE to be in direct contact with food.

New Product. Commercial specifications have not been established.

Features

-Excellent Colorability

-Adhesion to Polypropylene

-Direct Food Contact

-Enhanced Flow Properties

Color

Natural

Processing Method

Injection Molding

Mechanical Properties English SI Test Method
Shore Hardness, 10 sec delay 73 A 73 A ASTM D2240
Specific Gravity 1.02 1.02 ASTM D792, 23/23°C
Tensile Strength 895 psi 6171 kPa ASTM D412-Die C, 2hrs,23°C
Elongation at Break 591 % 591 % ASTM D412-Die C, 2hrs,23°C
100% Modulus 615 psi 4240 kPa ASTM D412-Die C, 2hrs,23°C
300% Modulus 840 psi 5792 kPa ASTM D412-Die C, 2hrs,23°C
Tear Strength 220 pli 39 kN/m ASTM D624
Thermal/Rheological Properties English SI Test Method
Apparent Viscosity @ 200°C 1341/sec 126000 cPs 126 Pa-sec ASTM D 3835
Apparent Viscosity @ 200°C 11170/sec 30800 cPs 31 Pa-sec ASTM D 3835
Aged Properties English SI Test Method
Compression Set, 22 hrs @ RT 30 % 30 % ASTM D 395B
Regulatory Information Yes/No
FDA Yes
Coloring
Color concentrates with polypropylene (PP), ethylene vinyl acetate (EVA), or low density polyethylene (PE) carriers are most suitable for coloring Dynalloy® OBC 8100-N75. Improved color dispersion can be achieved by using higher melt flow concentrates (with a melt flow from 25 - 40 g/10 min). Typical loadings for color concentrates are 1% to 5% by weight. Concentrates based on PVC should not be used. The final determination of color concentrate suitability should be determined by customer trials.
Purging
Purge thoroughly before and after use of this product with a low flow (0.5 - 2.5 MFR) polyethylene (PE) or polypropylene (PP).
Drying Time English SI
Drying is not Required
Molding Temperatures English SI
Rear 320 - 370 °F 160 - 188 °C
Center 350 - 380 °F 177 - 193 °C
Front 360 - 410 °F 182 - 210 °C
Nozzle 380 - 420 °F 193 - 216 °C
Mold 60 - 80 °F 16 - 27 °C
Molding Parameters English SI
Screw Speed 25 - 100 rpm 25 - 100 rpm
Injection Speed 1 - 3 in/sec 25 - 76 mm/sec
1st Stage - Boost Pressure 175 - 800 psi 1207 - 5516 kPa
2nd Stage - Hold Pressure 30 % of Boost 30 % of Boost
Back Pressure 0 - 100 psi 0 - 689 kPa
Hold Time (Thick Part) 3 - 10 sec 3 - 10 sec
Hold Time (Thin Part) 1 - 3 sec 1 - 3 sec